نتایج جستجو برای: HLA polymorphism
تعداد نتایج: 144913 فیلتر نتایج به سال:
Background: HLA-G is a non-classical human leukocyte antigen expressed primarily in fetal tissues at the maternal-fetal interface. The unique structure of HLA-G molecule permits a restricted peptide presentation and allows the modulation of the immune system. There is now general agreement that HLA-G is an important immunotolerant molecule with the capability of inhibiting immune cell functions...
hla-g is a non-classical hla class ib molecule with limited protein variability generated by alternative splicing. hla-g displays immunotolerant properties and hence plays important roles in the maintenance of a successful pregnancy and maternal tolerance of the semiallogenic fetus. polymorphism of the hla-g gene may potentially affect the biological properties of the protein, and a ...
Abstract Background and Objectives The HLA-G antigen is a non-classical HLA class-I with limited polymorphism. Several studies have indicated the role of a 14 bp Indel polymorphism rs371194629 in the 3'-UTR region of the HLA-G in acquisition of HTLV-1 infection. In this study, we investigated the correlation between the genotypes of this polymorphism and HTLV-1 infection in blood donors of Khor...
background: hla genes are highly polymorphic and certain alleles are frequent only in specific populations. therefore, hla is a unique tool for studying the genetic relationship between different populations. iranians are ethnically diverse people and one of the major ethnic groups in iran is lur population inhabiting along the central and southern parts of zagros chain mountain. objectives: ge...
hla-g is a tolerogenic molecule that expresses in cytotrophoblast cells and plays an important role in immune response suppression in maternal decidua. interactions between the extracellular domains of the hla-g protein with cell receptors of the immune system are well-known.this study investigated the association between hla-g gene polymorphism with repeated implantation failure (rif)...
HLA genotyping via next generation sequencing (NGS) poses challenges for the use of HLA allele names to analyze and discuss sequence polymorphism. NGS will identify many new synonymous and non-coding HLA sequence variants. Allele names identify the types of nucleotide polymorphism that define an allele (non-synonymous, synonymous and non-coding changes), but do not describe how polymorphism is ...
background: anthropological studies based on highly polymorphic hla genes pro-vide useful information for bone marrow donor registry, forensic medicine, disease as-sociation studies, as well as designing peptide vaccines against tumors, and infectious or autoimmune diseases. objective: this study was designed to investigate the genetic relationship of iranian arabs and jews using hla-class ii g...
Background: Allogenic hematopoietic stem cell transplantation (HSCT) is a strategy used for treatment of different malignant diseases. However, success of allo-HSCT can be hampered by graft-versus-host-disease (GVHD). Natural killer (NK) cells may play an important role in activating antigen presenting cells and subsequent activation of T cells. The main purpose of this study was the evaluation...
background hepatitis b virus (hbv) infection is a serious public health problem in china and worldwide. mother-to-child transmission is one of hbv’s main transmission routes in highly endemic regions. genome-wide association studies (gwas) identify single nucleotide polymorphisms (snps) at hla loci as associated with hbv infection. however, the mechanisms of hbv perinatal transmission and break...
the human leukocyte antigen (hla)-g molecule is expressed in cytotrophoblast cells, adult thymic epithelial cells, erythroblasts, pancreatic islets and mesenchymal stem cells. although, hla-g expression in allotransplanted patients is correlated with a better allograft acceptance, it is associated with an advanced grade of the tumor in cancer. in addition to the role on the immune system, hla-...
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